configure: Don't add -liptc to the global LIBS setting.

AC_SEARCH_LIBS() would do that, so save and restore LIBS when calling that
macro.

Signed-off-by: Florian Forster <octo@collectd.org>

diff --git a/configure.in b/configure.in
index add82f1..43e3329 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -1655,10 +1655,12 @@ fi
 # This could be in iptc or ip4tc
 if test "x$with_libiptc" = "xpkgconfig"
 then
+       SAVE_LIBS="$LIBS"
        AC_SEARCH_LIBS(iptc_init, [iptc ip4tc],
                        [with_libiptc="pkgconfig"],
                        [with_libiptc="no"],
                        [$with_libiptc_libs])
+       LIBS="$SAVE_LIBS"
 fi
 if test "x$with_libiptc" = "xpkgconfig"
 then